Medical image diagnostic apparatus for enlarging and reconstructive image portions

Abstract

A medical image diagnostic apparatus includes an acquisition circuitry configured to acquire data concerning the interior of an object, a reconstruction circuitry configured to reconstruct the first image concerning the object based on the acquired data, a display, and an enlargement reconstruction circuitry configured to enlarge/reconstruct the second image corresponding to the set enlargement reconstruction range based on a portion of the acquired data, with the second image being displayed in a display area of the display in place of a portion of the first image under the control of the display control circuitry.

The invention claimed is: 
     
       1. A medical image diagnostic apparatus, comprising:
 a display; and 
 processing circuitry configured to
 acquire data concerning an interior of an object, 
 reconstruct a first image concerning the object based on the acquired data, 
 display the reconstructed first image in a display area of the display, 
 enlarge a portion of the first image in the display area in accordance with an enlargement ratio set by an enlarging operation by an operator, and 
 in response to the enlargement ratio exceeding a predetermined value,
 determine, as an enlargement reconstruction range, an area of the enlarged portion of the first image displayed in the display area, 
 reconstruct a second image corresponding to the determined enlargement reconstruction range based on a subset of the acquired data, and 
 display the reconstructed second image in the display area. 
 
 
 
     
     
       2. The medical image diagnostic apparatus of  claim 1 , wherein the processing circuitry is further configured to determine, as the enlargement reconstruction range, the area of the first image displayed in the display area and a peripheral portion of the area of the first image. 
     
     
       3. The medical image diagnostic apparatus of  claim 1 , wherein the processing circuitry is further configured to determine, as the enlargement reconstruction range, a range including a region of the object included in the portion of the first image displayed in the display area. 
     
     
       4. The medical image diagnostic apparatus of  claim 1 , wherein the processing circuitry is further configured to determine, as the enlargement reconstruction range, a range differing in slice position from the first image and corresponding to the portion of the first image. 
     
     
       5. The medical image diagnostic apparatus of  claim 4 , wherein the processing circuitry is further configured to determine portions of a plurality of slices differing in slice position from the first image as a plurality of enlargement reconstruction ranges, and perform enlargement reconstruction of the slices in ascending order of distance from a slice of the first image. 
     
     
       6. The medical image diagnostic apparatus of  claim 1 , wherein the first image includes an MPR image on a predetermined slice of volume data and a three-dimensional image based on volume data. 
     
     
       7. The medical image diagnostic apparatus of  claim 1 , wherein the processing circuitry is further configured to display the enlarged portion of the first image, and in response to the enlargement ratio exceeding the predetermined value, display the second image instead of the enlarged portion of the first image. 
     
     
       8. A medical image processing apparatus, comprising:
 a display; 
 a memory configured to store data concerning an interior of an object; and 
 processing circuitry configured to
 reconstruct a first image concerning the object based on the data, 
 display the reconstructed first image in a display area of the display, 
 enlarge a portion of the first image in the display area in accordance with an enlargement ratio set by an enlarging operation by an operator, and 
 in response to the enlargement ratio exceeding a predetermined value,
 determine, as an enlargement reconstruction range, an area of the enlarged portion of the first image displayed in the display area, 
 reconstruct a second image corresponding to the determined enlargement reconstruction range based on a subset of the acquired data, with the second image being displayed in the display area of the display in place of a portion of the first image, and 
 display the reconstructed second image in the display area. 
 
 
 
     
     
       9. The medical image processing apparatus of  claim 8 , wherein the processing circuitry is further configured to determine, as the enlargement reconstruction range, the area of the first image displayed in the display area and a peripheral portion of the area of the first image. 
     
     
       10. The medical image processing apparatus of  claim 8 , wherein the processing circuitry is further configured to determine, as the enlargement reconstruction range, a range including a region of the object included in the portion of the first image displayed in the display area. 
     
     
       11. The medical image processing apparatus of  claim 8 , wherein the processing circuitry is further configured to determine, as the enlargement reconstruction range, a range differing in slice position from the first image and corresponding to the portion of the first image. 
     
     
       12. The medical image diagnostic apparatus of  claim 11 , wherein the processing circuitry is further configured to determine portions of a plurality of slices differing in slice position from the first image as a plurality of enlargement reconstruction ranges, and perform enlargement reconstruction of the slices in ascending order of distance from a slice of the first image. 
     
     
       13. The medical image diagnostic apparatus of  claim 8 , wherein the first image includes an MPR image on a predetermined slice of volume data and a three-dimensional image based on the volume data.